Synthesis, molecular docking, in silico study, and evaluation of bis-thiazole-based curcumin derivatives as potential antimicrobial agents

Abstract

The escalating challenge of antibiotic resistance, responsible for nearly a fifth of global fatalities, underscores the critical need for innovative therapeutic approaches and the creation of new medicinal and diagnostic solutions. Thiosemicarbazones and thiazoles emerge as promising candidates for the development of potent antimicrobial agents. In this research, 3-(2-arylhydrazineylidene)pentane-2,4-diones underwent a reaction with thiosemicarbazide to generate bis-thiosemicarbazones, which were subsequently reacted with α-keto hydrazonoyl halides, yielding twelve novel bis-thiazole compounds. This investigation aims to synthesize these bis-thiazole derivatives utilizing cost-effective and readily available laboratory resources, assessing their antimicrobial efficacy and contributing to the international efforts to combat antibiotic resistance. The rise of infections globally poses a significant threat, making it crucial to responsibly address these challenges by discovering new molecules capable of combating resistant microorganisms. Moreover, molecular docking studies were undertaken to determine the precise interaction mechanisms of the most effective compounds with the target protein (PDB ID 3O15). The results from these molecular docking analyses aligned well with in vitro biological studies, suggesting that these new ligands are under exploration for their strong antimicrobial properties. Furthermore, in silico evaluations conducted on these leading compounds revealed a promising ADMET profile, indicating their potential as drugs with favorable pharmacokinetic and pharmacodynamic characteristics.

Keywords

• Bis-thiazoles
• Thiosemicarbazones
• Hydrazonyl halides
• Antibacterial activity
• Molecular docking
• In silico study